Ink set for ink jet recording, ink jet recording process,...

Details Ink set for ink jet recording, ink jet recording process,... Ink set for ink jet recording, ink jet recording process,...

2005-04-12

2005-04-12

Shah, Manish (Department: 2853)

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

C347S096000, C106S031600, C523S160000

Reexamination Certificate

active

06877851

ABSTRACT:
The invention provides an ink set which includes: at least one dark pigment ink containing a pigment and water, wherein the pigment is one microencapsulated in a resin; and at least one light pigment ink containing a pigment, a resinous dispersant, and water, wherein the concentration of the pigment is up to ½ the pigment concentration in the dark pigment ink. The invention also provides an ink set which includes: at least one dark pigment ink containing a pigment, a resinous dispersant, and water; and at least one light pigment ink which contains a pigment, a resinous dispersant, and water, and in which the concentration of the pigment is up to ½ the pigment concentration in the dark pigment ink, wherein the resinous dispersant in the dark pigment ink has a lower acid value than the resinous dispersant in the light pigment ink.

REFERENCES:
patent: 6670409 (2003-12-01), Yatake
patent: 20040020406 (2004-02-01), Kato

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